// Copyright (c) 2010, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// ---
// Author: Jeffrey Junfeng Pan (panjunfeng@gmail.com)
// Credit: part of the code is borrowed from http://code.google.com/p/psvm/

#include <sstream>
#include "strutil.h"
#include <stdio.h>

void SplitStringUsing(const string& str,
                      const char* delimiters,
                      vector<string>* res) {
  // Skip delimiters at beginning.
  string::size_type lastPos = str.find_first_not_of(delimiters, 0);
  // Find first "non-delimiter".
  string::size_type pos     = str.find_first_of(delimiters, lastPos);

  while (string::npos != pos || string::npos != lastPos)
  {
      // Found a token, add it to the vector.
      res->push_back(str.substr(lastPos, pos - lastPos));
      // Skip delimiters.  Note the "not_of"
      lastPos = str.find_first_not_of(delimiters, pos);
      // Find next "non-delimiter"
      pos = str.find_first_of(delimiters, lastPos);
  }
}

string SimpleItoa(int input) {
  std::stringstream text;
  text << input;
  return text.str();
}

string StringPrintfV(const char* format, va_list ap) {
  char buffer[1024];
  va_list backup_ap;
  va_copy(backup_ap, ap);
  vsnprintf(buffer, sizeof(buffer), format, backup_ap);
  va_end(backup_ap);
  return string(buffer);
}

string StringPrintf(const char* format, ...) {
  va_list ap;
  va_start(ap, format);
  string result = StringPrintfV(format, ap);
  va_end(ap);
  return result;
}
